What is astronomy actually? These are good questions and worthy of an answer.
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2 We ve often been asked: What is astronomy actually? And what it is good for? These are good questions and worthy of an answer. ESA/NASA/Hubble
3 Astronomy is the study of all celestial objects. It is the study of almost every property of the Universe from stars, planets and comets to the largest cosmological structures and phenomena; across the entire electromagnetic spectrum and more. It is the study of all that has been, all there is and all that there ever will be. From the effects of the smallest atoms to the appearance of the Universe on the largest scales. ESA/NASA/Hubble
4 Astronomy in the ancient world Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, and astrological practices of the ancient civilisations. Early astronomy involved observing the regular patterns of the motions of visible celestial objects, especially the Sun, Moon, stars and naked eye observations of the planets. The changing position of the Sun along the horizon or the changing appearances of stars in the course of the year was used to establish agricultural or ritual calendars. wikipedia wikipedia
5 Astronomical Research Today Astronomical objects are far and faint We only have access to limited information about their nature We need large and powerful instruments: resolution and sensitivity Astronomers combine different types of observations and in different wavelengths
6 Astronomical Research Today Astronomers observe electromagnetic waves from all parts of the spectrum. Every type of visible and invisible light reveals a different piece of the great cosmic puzzle.
7 Astronomical Research Today Astronomers around the world study the workings of the Universe. Today, this is being done through a combination of many disciplines and sub-fields using many different approaches; Ground-based telescopes Space based observatories Robotic probes Theoretical calculations and simulations Astronomers study the Universe not only to further our understanding of the cosmos, but to advance other fields of science and technology too. ESO ESO
8 Astronomical Research Today Astronomy consists of a series of disciplines including: Solar astronomy: Studies of our own star, the Sun Planetary science: Studies of the bodies in our own Solar System and those in orbit around other stars Stellar astronomy: The study of stars and stellar evolution NASA/JPL Galactic astronomy: The study of our own Milky Way and its evolution Extragalactic astronomy: The study of objects outside of our Milky Way Cosmology: The study of the Universe as a whole. NASASpitzer
9 Astronomical Research Today Landesmuseums für Vorgeschichte And some interdisciplinary studies: Astrobiology: The study of the advent and evolution of biological systems in the Universe Archaeoastronomy: The study of ancient or traditional astronomies in their cultural context, utilising archaeological and anthropological evidence CAE Astrochemistry: The study of the chemical constitution of objects in space
10 There are two main streams of research in astronomy (as well as other natural sciences) Fundamental Research & Applied Research
11 Fundamental Research Fundamental Research is where new ideas and methods that later become commonplace begin as 19-century curiosity about electricity led to the electric light, and the world wide web has allowed international teams of researcher to communicate more easily. No amount of applied research on the candle would have brought us the electric light; no amount of research and development on the telephone would have brought about the web. Science needs space for curiosity and imagination.
12 Fundamental Research Fundamental research is the basis of the scientific method. It is motivated by an astronomer s curiosity or intuition without any end product in mind. Examples include: Galileo Galilei s study of the jovian moons that helped us understand our Solar System in context. Edwin Hubble s studies of the recession of distant galaxies that demonstrated that the Universe is expanding. NASA Millennium Mathematics Project
13 Fundamental Research Fundamental research is a stand-alone process that is done because it is deemed valuable by society and civilisation. It often occurs on very long timescales and satisfies a deeply rooted curiosity in humans. ESA NASA/Chandra
14 Applied Research Applied research is research for a specific, often commercial or clientdriven, purpose. Astronomy seemingly has small impact on our daily lives. But NRAO Gemini
15 Astronomy Impacts our Daily Lives Advances in astronomical and space science technology, brought about by applied research, can often have a greatly beneficial effect on humankind after 50, 100 or even more years. Today millions of people worldwide often unknowingly are affected by the short- and long-term advances made in astronomy and space science. NAOJ
16 Technology Transfer Some astronomical results, or derivatives of astronomical research, can be transferred to technological advances (so-called Technology Transfer). For instance: The development of CCD detectors Image processing techniques Satellite Communication Techniques ESO/VLT Development of Robotics Astronomy benefits from and drives technology
17 Astronomy Impacts our Daily Lives Astronomy is also useful for: Agriculture: The seasons are main markers in the agricultural calendar and for centuries astronomical observations determined when to sow and when to harvest. Nautical Navigation: Knowledge of the tides induced by the Sun and the Moon is very important to the all ocean-going traffic. In earlier times measurements of the position of the Sun, Moon, stars and planets in the sky were the only way of knowing a ship s position at sea. This skill is still taught as a way to survive in case of instrument failure. And more
18 Astronomy Impacts our Daily Lives Architecture: Awareness of the Sun's daily path across the sky is crucial for the design of new buildings, to achieve proper light and temperature conditions. Crime investigation: The Sun s daily path, phases of the Moon, eclipses, meteors and other sky events help police investigations. Possible survival of humankind: The search for Near Earth Asteroids and studies to understand them may one day help us deal with a dangerous meteorite. And more
19 Astronomy Impacts our Daily Lives Climate research: Manmade climate changes are at the top of scientific and political agendas, but need to be disentangled from certain astronomical phenomena that have long-term influences on Earth s climate on our Earth. The variability of the amount of solar radiation changes the total energy input to the Earth s atmosphere. The variability of the solar ultraviolet emission affects the ozone layer and the temperature on Earth. High energy particle effects the ozone layer. Cosmic rays may affect cloud coverage. Jan Osburg
20 Astronomy Impacts our Daily Lives Thanks to accurate astrometry (positional astronomy) our satellites can fly through space knowing where they are. Understanding General Relativity enables us to fly planes, launch satellites or build GPS receivers. Weather forecasting: Thanks to advances in satellite technology we have more accurate weather forecasting. GPS Eumet
21 The 10 Biggest Discoveries in Astronomy 1.The Milky Way is not the only galaxy in the Universe. 2. The Universe is expanding. 3.The generation of stellar energy. 4.There are only two common types of stars dwarfs and giants. 5.We now understand the composition of the ordinary matter in the Universe. ESA/NASA/Hubble
22 The 10 Biggest Discoveries in Astronomy 6.Exotic objects from pulsars and black holes to white dwarfs. 7.The Microwave Background Radiation. 8.Dark Matter. 9.Extrasolar planetary systems. 10.Solar neutrinos and helioseismology. From The Top Ten Astronomical breakthroughs of the 20th century (David W. Hughes, Richard de Grijs) CAP Journal, Issue 1, October 2007 ESA/Hubble
23 IYA 2009 Secretariat Hubble European Space Agency Information Centre Space Telescope-European Coordinating Facility ESO Garching Munich Germany Contact: Pedro Russo
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